ECP 11-0224B Super TAPP Automatic Voltage Control Test Form

Super TAPP Automatic Voltage Control Test Form / Document Number: ECP 11-0224b
Version: 2.0
Date: 30/01/2017

Super TAPP Automatic Voltage Control Test Form

Substation Name
Substation Number
Circuit
RTMU Tap Changer Control Module Serial Number
RVM5 Voltage Control Module Serial Number
RTMU Tap Changer Control Module
Tap Position Indicator / SW setting / Meaning
Record setting of SW1 to SW4 for number of taps
Record setting of SW5 for type of sender
Record setting of SW6 for type of tap changer
Confirm correct indication for all tap positions (tick)
Tap Change Control
Confirm correct step by step operation / (ü)
Confirm lockout for tap change runaway / (ü)
Confirm lockout on RTMU also locks out TAPCOM / (ü)
Voltage Monitor
Calculated high volts alarm setting
Calculated low volts alarm setting
Inhibit Tap / Alarm
Measured high volts alarm value
Measured low volts alarm value
Confirm high volts condition blocks tap raise / (ü)
Confirm low volts condition blocks tap lower / (ü)
Alarm
Confirm module alarm after 15 mins / Continuous high/low volts alarm / mins
Continuous tap change in progress indication / mins
Confirm module alarm drops tap change incomplete flag / (ü)
Voltage Difference
Confirm SW7 set to enable voltage difference detector / (ü)
Confirm SW8 set to 10% / (ü)
Confirm VDD operation blocks tap raise signals / (ü)
Site Conditioning Switches
Record final setting of site conditioning switches / (ü)
RVM5 Voltage Control Module
Basic Level Test
Basic / +/- Band / Tolerance / High Ind / Low Ind
95% / 1% / 1%
100% / 1% / 0.5%
105% / 1% / 1%
100% / 2.5% / 0.5%
Fast Tap Down
Switch ON "1", high +2% gives tap down after 4s
Switch OFF "0", high +2% gives tap down after initial delay time
Application of voltage reduction causes fast tap down (even when switch is OFF "0")
<80% Inhibit
Basic / +/- Band / Tolerance / Inhibit Ind
100% / 1% / 87-89V
Confirm delay timer is reset to block tapping / (ü)
Voltage Offset
Basic / Band / V Offset / High Ind / Low Ind
100% / 1% / -3%
100% / 1% / -6%
Confirm Vred add switch is OFF / (ü)
Confirm applying 3% and 6% together gives 6% only / (ü)
Timers
Initial Delay / Intertap Delay / Tolerance / Time
Min / 10s +/- 0.5s
Max / 120s +/- 2s
Min / 5s +/- 0.5s
Max / 60s +/- 1s
Alarm
Tolerance / Time
Voltage continuously out of band / 15min +/- 10s
Confirm alarm blocks delay timer / (ü)
Confirm alarm operates auto control faulty flag / (ü)
Switch Settings
Number of transformers at site setting
Tap pulse length setting
Voltage reduction add setting
Fast tap down setting
On-load Checks - Summation Buswiring
Transformer load current / A
LDC CT secondary current into terminal 3 / A
Total load secondary current in buswire 2 - 5 / A
Confirm CT/VT phasing check correct / (ü)
Confirm control relays bring parallel transformers to the same tap position / (ü)
On-load Checks - Operational Settings
Basic / %
LDC / %
Coupling / %
Band / +/-%
Initial delay / s
Intertap delay / s
Tap counter reading
Comments
Test Equipment
Purpose / Make/Type / Serial Number
Certification / (ü)
All tests have been completed satisfactorily
Contractor Commissioning Engineer (if applicable)
Organisation / Name
Date / Signature
UK Power Networks Commissioning Engineer
Name / Signature / Date